Saw-jointer



(No Model.)

P. B. FITZPATRIGK.

SAW JOINTER.

No. 318,713. Patented May 26, 1885.

WITNESSES:

r. Wauhinglcm. u. c

Unrrnn STATES FRANCIS B. FITZPATRICK, OF DALLAS, TEXAS.

SAW-JOINTER.

KJEECIFICATIQN forming part of Letters Patent No. 318,713, dated May 26,1885.

Application filed April 7, 1885. (N0 model.)

To all whom it may concern.-

Be it known that I, FRANCIS B. FITZPAT- RICK, a citizen of the UnitedStates, and a resident of Dallas, in the county of Dallas and State ofTexas, have invented certain new and useful Improvements inSaw-Jointers; and I do herebydeclare that the following is a full,clear, and exact description of the invention, which will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, which form a part ofthis specification, and in which Figure l is a perspective view of myimproved sawjointer, showing it in operation. Fig. 2 is a cross-sectionof the jointer, and Fig. 3 is a perspective view showing the parts of myjointer separated.

Similar letters of reference indicate corresponding parts in all thefigures.

My invention has relation to that class of saw-j ointers in which a fileis clamped between two plates or castings adapted to be straddled uponthe saw-blade and to be reciprocated up on the ends of the teeth of thesame, causing the saw to file off the ends of the saw-teeth in onelevel; and it consists to that end in the improved construction andcombination of parts of the same, as hereinafter more full described andclaimed.

In the accompanying drawings, the letters AAindicate the plates orcastings, which are formed with longitudinal grooves B B in their innerfaces, which grooves will form a triangular perforation when thecastings are seen in cross-section. The lower portions of the innerfaces of the castings are cut away to form a longitudinal groove, 0, ata right angle to the lower sides of the grooves B. The upper portions ofthe castings are curved to form each one-half of a socket, D, and thecastings are held adjustably together by means of a screw, E, passingthrough the castings between the grooves B and the curved portions D. Atriangular file, F, may be inserted into the perforation formed by thegrooves B, and may be clamped by tightening the screw, and thedownwardly-facing side of the file will be at right angles to the sidesof the groove 0, between which sides the saw-blade is placed. It willnow be seen that by reciprocating the clamp and file upon the saw-bladeor by reciprocating the saw-blade in the groove of the clamp the ends ofthe teeth of the saw will be filed level by the file, and it will alsobe seen that the socket formed by the upper portions of the castings mayserve either for the insettion of a handle, or the'entire clamp maybesecured upon a rigid rod by clamping the socket around it.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States The combination of two castingshaving longitudinal triangular grooves upon their inner facing sides,having the lower portions of their inner facing sides cut away to form alongitudinal groove, B, and having the upper portions of their innerfacing sides bulged to form longitudinal halves of a socket, with ascrew passing through the castingsin the space between the bulged socketportions and the longitudinal grooves, the said grooves being adapted toreceive a triangularfile having its lower face at right angles to thesides of the groove B, as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature in presence of two witnesses.

FRANCIS B. FITZPATRIGK.

\Vitnesses:

THOMAS UNDERWOOD, JOHN PAUL.

